Question 489 of 514

Explain Vault architecture →mediumMultiple ChoiceObjective-mapped

VA-003 Explain Vault architecture Practice Question

This VA-003 practice question tests your understanding of explain vault architecture. This is a configuration task: choose the command set that satisfies every stated requirement. Small differences — like 'secret' vs 'password' or 'transport input ssh' vs 'all' — change whether the answer is correct. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.

Exhibit

storage "file" {
  path = "/vault/data"
}

seal "awskms" {
  region     = "us-west-2"
  kms_key_id = "1234abcd-12ab-34cd-56ef-1234567890ab"
}

listener "tcp" {
  address     = "0.0.0.0:8200"
  tls_disable = "false"
  tls_cert_file = "/etc/vault/vault.crt"
  tls_key_file  = "/etc/vault/vault.key"
}

api_addr = "https://vault.example.com:8200"
cluster_addr = "https://vault.example.com:8201"

Refer to the exhibit. What seal mechanism is configured for this Vault instance?

Question 1mediummultiple choice

Full question →

Exhibit

storage "file" {
  path = "/vault/data"
}

seal "awskms" {
  region     = "us-west-2"
  kms_key_id = "1234abcd-12ab-34cd-56ef-1234567890ab"
}

listener "tcp" {
  address     = "0.0.0.0:8200"
  tls_disable = "false"
  tls_cert_file = "/etc/vault/vault.crt"
  tls_key_file  = "/etc/vault/vault.key"
}

api_addr = "https://vault.example.com:8200"
cluster_addr = "https://vault.example.com:8201"

A
AWS KMS auto-unseal
The seal block specifies AWS KMS.
B
HSM seal via PKCS#11
Why wrong: No HSM configuration is shown.
C
Shamir seal with default shares
Why wrong: Shamir is not configured; the seal block overrides it.
D
No seal; Vault is in insecure mode
Why wrong: A seal block is present, so it's configured.

Full breakdown with real-world context →

Answer choices

Why each option matters

Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.

Correct answer & explanation

✓

AWS KMS auto-unseal

The exhibit shows a Vault instance configured with `seal "awskms"` and a `region` and `kms_key_id` specified. This indicates that AWS KMS is used as the auto-unseal mechanism, where Vault delegates the unsealing process to AWS Key Management Service, eliminating the need for manual Shamir key shares.

Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.

Answer analysis

Option-by-option breakdown

For each option: why learners choose it and why it is or isn't the right answer here.

✓
AWS KMS auto-unseal
Why this is correct
The seal block specifies AWS KMS.
Related concept
Read the scenario before looking for a memorised answer.
✗
HSM seal via PKCS#11
Why it's wrong here
No HSM configuration is shown.
✗
Shamir seal with default shares
Why it's wrong here
Shamir is not configured; the seal block overrides it.
✗
No seal; Vault is in insecure mode
Why it's wrong here
A seal block is present, so it's configured.

Common exam traps

Common exam trap: answer the scenario, not the keyword

HashiCorp often tests the distinction between default Shamir sealing and external auto-unseal mechanisms; the trap here is that candidates see a Vault configuration and assume it uses the default Shamir seal, missing the explicit `seal "awskms"` directive that overrides it.

Trap categories for this question

Command / output trap
No HSM configuration is shown.

Detailed technical explanation

How to think about this question

Auto-unseal with AWS KMS uses the Vault's seal configuration to call the AWS KMS `Decrypt` API during startup, using the specified KMS key to unwrap the master key. This is defined in Vault's configuration file under the `seal` stanza, and the `kms_key_id` must match an existing AWS KMS key in the specified region. In production, this eliminates the need for multiple unseal key holders and reduces operational overhead, but requires IAM permissions for the Vault instance to access KMS.

KKey Concepts to Remember

Read the scenario before looking for a memorised answer.
Find the constraint that changes the correct option.
Eliminate answers that are true in general but not in this case.

TExam Day Tips

Watch for words such as best, first, most likely and least administrative effort.
Review why wrong options are wrong, not only why the correct option is correct.

Key takeaway

Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.

Real-world example

How this comes up in practice

A small business has 20 workstations on the 192.168.1.0/24 network and one public IP from its ISP. The router uses PAT (NAT overload) so all 20 devices share one public address using different source ports. NAT questions test whether you understand the four address terms and which direction each translation applies.

What to study next

Got this wrong? Here's your next step.

Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.

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FAQ

Questions learners often ask

What does this VA-003 question test?

Explain Vault architecture — This question tests Explain Vault architecture — Read the scenario before looking for a memorised answer..

What is the correct answer to this question?

The correct answer is: AWS KMS auto-unseal — The exhibit shows a Vault instance configured with `seal "awskms"` and a `region` and `kms_key_id` specified. This indicates that AWS KMS is used as the auto-unseal mechanism, where Vault delegates the unsealing process to AWS Key Management Service, eliminating the need for manual Shamir key shares.

What should I do if I get this VA-003 question wrong?

Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.

What is the key concept behind this question?

Read the scenario before looking for a memorised answer.

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Last reviewed: Jun 30, 2026

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